What is Xen? Where can I learn about setting up Xen?
Fedora includes extensive support for virtualization. Xen enables multiple operating systems to run simultaneously on the same machine with little reduction in overall performance. Each operating system is allocated some of the resources of the host computer. With Xen, administrators may also move a running operating system between machines without disrupting or shutting down services. Existing virtual machine and virtual server products offer similar facilities, but lack the same level of performance and integration that the Xen approach offers.